Dictionary

chitin

noun chi·tin \ˈkī-tən\

Definition of CHITIN

:  a horny polysaccharide (C8H13NO5)n that forms part of the hard outer integument especially of insects, arachnids, and crustaceans
chi·tin·ous \ˈkī-tən-əs, ˈkīt-nəs\ adjective

Origin of CHITIN

French chitine, from Greek chitōn
First Known Use: circa 1839

chitin

noun chi·tin \ˈkīt-ən\   (Medical Dictionary)

Medical Definition of CHITIN

:  a horny polysaccharide that forms part of the hard outer integument especially of insects, arachnids, and crustaceans
chi·tin·ous \ˈkīt-ən-əs, ˈkīt-nəs\ adjective

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